Water and air relief-valve.



K PATBNTBD AUG. 4, 1908. -1

. WATER AND AIR RELIEF vAivB; Y

APPLICATION FILI-Ii) JH. 2B, 1903.

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i QA. HARRISON.V WATER AND AIR RBLIEPVALVB..

APPLICATION .AP'ILHD JAN. 26

i- NITED STATES. i

AMOsHARRIsOOr OHICAGO, ILLINo1s,.-\ssIo.-\'on 'rOn'aRRENwEBsrI-:R t coMPANY,.oF' y C.\.\lDEN,-NE\ V JERSEY, A (JORPORTIQN OF NEW JERSEY.

wA'EP. ANnAnz 4MILILF-VALVE.'f I l To all whom it may concern." i

Be it known that I, Anios HAnnIsON, a. citizen of the VUnited States, residing at Cliicago, in the county' o'f ("Ook and StatoV of Illinois, have invented vcertain new and `use ful Improvements in rater and Air Relief- Yalves, of which the following is a descrip;

' tion.

My improved valve is'intended to control the discharge of air and water of condensa-- tion from a radiator outlet, or. thc like, and is particularly adapted for -use in those steam heating vsystems in which a. lower pressure is maintained in the retrn.

Inv such systems, when .the thoroughfare xsopened by the lifting of the valve piece,

. the water of condensation is drawn out by the lower" pressure in the return, and if the thoroughfare remains Open after the water has passed out, steam willlbe drawn ont also and there will be a loss of heat units. It is' therefore desirable. that the thoroughfarev should he open at those times' 'only whenl water of condensation is 'present in fmaterial volume. lt has been proposed for this pur. pose to use a lloat valve,`i. e. a valve-piece A carried hy afloat which is lifted hy the water of condensation -to Open the thoroughfare and falls when the water has-escaped. A In' suc-h valves, howeyer. when used In vaculInn systeins,1he suction or lower pressure4 in the. ret-urn acts against the flotation and tends to hold the. valve Acloset-ITA. simple float valve of this character is alsoobjectionable hec-anse it affords no provision, for the escape of air while. thel valveis closed, and,

In vacuum systems, the constant free discharge of airis necessary to successful operation. It has also been proposed to actuato the valve by a tlnidpressure motor operated by the difference in the pressures on toe inlet and outlet sides of the valve body, under the dut-.ed on the pressure motor and the valve piece. Is Opened; In such valves, however,

nmtrol Of the conditionsjsu'ch as thepresence of water Of condensation, on the Inlet side. ln such cases, when the valve piece 1s elosedQthe air is drawn out through an air mssageway, which is senledhy the accumu- :iiion of water on the inlet side, either directly. or by the operation of Inechauiir-al de.- rces, suchas a float, and'when this passage,- wiiy is thus sealed, the differential is profthe water of condensation acts merely to the air passageway, and the operation of f Specification of Letters Pate-nt..- Applicata on med January A2e, 1903.

.to the inner'walls of the.valve-hotly, or tou wall therein, lo vform a normal :Linspire-.o to 2:.

Serial No. 140,505.-V`

their-aire pieceis produced wholly; 'hy `vthe difierenlml pressuro'in-tingon the motor. ;*lt l Patented Aug.v 4, j..

1s therefore necessary atall finies to nnrintainj conditions capable of prodiu-.mgasuiliclvntly .great (intel-entrai to operato the inotor. v no It is the 'object ol' in r invention to 'combine in one valve structure-tho advantages of both I the float and pressurev motor ty es, and' toy.

liy a Inotori float, or a device which'acts both. as a float'V and as a pressurlfi-inotor, and is so arranged*- that the a.r`:onI'1n1lation of water of condensa- A this end l control the talvepiee.

tion, which acts to lift the .motor-float by flotation, also acts .to seal the airpassagewayi and roducethe ditl'erential ressuro. The.'

two oreesvoftlotation and.un alanced res-..

sure are thus acting simultaneously inald ofg one another. It'results thata smaller. dif-Q .ferentlal pressure canhei'ised' to actuate, the

Valve, resulting in more economical condiv 'tions of operation, and a heavIer and stronger--` float-motor may be employed. In the drawings: Figure lis-a vertical sec-l, tion of ,my air and water' relief vulveillusq trating one form or type; Fig. 2 is a lio`1izon,' tal section on the line iii-Zot Fig. l Fig. 3 is'- 'an enlarged view of part'of Fig.- 1; Fig. 4 is a; horizontal set-.tion on the line 4%.4 `of-Fig.` 3;.: Fig. 42 is a side elevation of a steam radiator-fl and .its sup )ly and returnlconnectionsillustrating the ocation Of the valve; Fig.l 5t i'sJ'a.V vertical section similar to Fig, 1 illustrating -a'second form ortype; and Fig. 6.is a horizon` tal sect-ion on the line 6446 of Fie.' .1

The valve h'odv l mayK heois any-usual' form having an inlet 2 andan out-let 3j. 13 'r shown lOpen at thotop and'pr'ovided with at.'

8 is the.Inotor-lloat'within thevalre-body.

which carries. the vvalve-piece Q'ada ted toA control4 the thoroughfare to the out et. .In .l

the construction shown in F igsl'and 2 this.

lnotor-loat'is open atthe.' top and isg'uided in its movements on a rod l() fastened at the.'

top in the cap 4 andheld at thehottoin in a, I' i' support l2 in .the Outlet., the hodv 8 benigprovideiiwith avguide `spider l'l., '.'heholel In the neck of the. niolor-llmit and its. Yalvc piece E), through' which thel rod passes, is of' somewhatlarger diameter than lhorod, to aliord'an air passageway 3U. i

[lont issuch that. its omersurfaces 'are close the 4top of the motor-liest, but adapted, when a material volume of vrater of .condensation collectsin the valve-body, tobe sealed by said'water.

In the construction shown in Figsl and 2 the valve bod is shown provided on bnc side with a depen ing nearly to the bottom of the valve-body,

, with the motor-float arranged within said ftering through the inlet 2 passes under the partition 5 and up to the interior oi the float and-thence through the passageway 3() to the outlet. A portion of tne may also pass throu h the plug 6, but is not material. At suc 1 times thc air will ps out freely and there will be no operation ci: the motor-float.

When, however, Wateroi condensation accumulates in' the valve-body 'in suicient quantity to act upon the bottom of the motor-float and ioat it, the Water will. at the same time pass up into the nir space between the outer Wall of the motor-heat and the vvalve-body or. partition 5 and seal it. As

the free air assagetvay will then be closed owever, is too small to e ect the result) a lower pressure will be cre d on the inner side of the motor-iloat, which co-act with the 'lifting action of the Water. toraise the As this movement is roduced'by the combined action of the d` terential pressure act-inf? on the motor-float and flotation, it may be obtained with much. less diierentiai than would otherwise be necessary, thus reouirlng less partial vacuum in the returns an a more economical condition of operation.n It also enables -a-heavier and more durable oat to be used.

If the u per edge of the open float seated against t e top oi the cap, as would occur in such a construction as is shovrn in Fig. 1, it might happen that the lower pressure or parti vacuum created in the body of the motor-float might'prevent it from falling when the water paed out. To revent this a small vent 13 may be placedD in the upper art of the motor iloat and'the vent 6 may e em loyed in the wall 5. In t e construction shown in Figs. 5 and 6,

instead of the partition walls', on one side,

there is shown a dome shaped Wall 1li carried .by the cap 4 and fitting over the motor-iloat- This dome shaped wall mev be provided .with a vent 15 controlled by a plug 16 to relieve tlxe suction in the motor-float after it` below the top of the inlet, said valve-piece has seated on the inside of the dome wall.

g Wall or partition 5 extend- (except for t e plug controlled vent 6, which, 35 h i This water and air relief valve, while adaptedespeially to f vacuum systems of steam heating, may also be used in pressure systems, as the motor-float will operate in t e manner described-in any system in which there is'a differential, in the preure in the;

inlet and outlet of the valve body, whether that difcrential be lproduced by the removal of air from the returns by suction creating devices, or by the drop in pressure duc to the -ph sical conditions of operation.

What 'I claim as new and 'desire to secure by Letters Patent is as follows:

1. Valvemechanism for discharging ail' 1clilnnnunicating under said Wall with the et. n 2. Valve mechanism for dischargino `air and Water of condensation from steam heating systems, consisting of a. valve-bod)T having an inlet and an outlet, a cylindrical ca sin within said body, a float within said cy drical casing, and a valve-piece controlling said outlet and carried by said iioat and' having an air discharge passageway leading through it and formino' a commun1- cation between the outlet and t e-u per p'art of the space Within the casing, t ie space witln said casing about the float communicatino' under said casing with the inlet.

3. iifalve mechanism for dischargin air and Water of condensation from steam iieating systems, consisting of a valve-body having an inlet and an outlet, a cylindrical cas ino within said body, a guide rod within-the va ve-body, a ioat within said casing guided by said rod,- and a valve-piece to-ontrol the outlet carried by said float and having an air discharge passageway orming a communication between the outlet and the u per part of the space within the casing, t 1e space within the casing about the float communi-V catin' under said casing with the inlet.

4; alve mechanism for discbargino air and Water of condensation from steam heat ing systems, consisting of a valvebody havmg an opening at the top and provided with an inlet and al; outlet, a detachable cap closing the opening at the top of said body, a

.depending guide rod carried by said cap, a -iioat gui( e( control the outlet carried by saidV iloat, a

by said rod, a valve-piece to de ending Wall in said body between the mlbt and float and having its lower edge sov hav-inganair discharge passageway forming a communication between the outlet and the upper partl ofthe space inside of said depending Wall, and theinner space between said Wall and Heat communicating under thelower edge osaid Wall with the inlet.

5. Valve mechanism for dischargin air and Water of condensation from steam eating systems, conssmg of ambre-body having an inlet and an outlet, a ioat insad indy, a valve-piece to control said outlet operatively connected with and controlled by said iioat, and a depending wall between the 'inlet and float having its lower edge below the top of the inlet, said valve-piece having an air discharge passegeway formin a communication between the outlet and the upper part of the space Within the depending wall, and the space between sa1d wall an float communicatirff under theylower edge of said wall with the inlet.

6. Valve mechanism fordisehargi air and water ofcondensetion from steam eating systems, consisting of a valve-body having a float chamber provided with an outlet for the discharge of wat-er of condensation, a iloat in s aid float chamber, a valve-piece to control said outlet operatively connected with and controlled by said oat, said valve mechanism being provided with a conduit leading from the inlet to the upper part of the iioatvzhamber, and the valve-piece being provided with an air discharge passageway orming a communication between the ou'tlet and the upper part of the fioat chamber into which the air is discharged through said conduit.

7 Valve mechanism for discharging air and waterof condensation from steam eating systems by differenti l pressure compris i a float chamber provided with an outlet, a oat in said chamber, said mechanism having a conduit adapted to provide communication between the radiator and float chamber, a li uid'seal arranged to be sealed by the accum ation of water of condensation in said conduit, thereby increasing the difierential pressure on opposite sides of said liquid seal, whereby a portion of the accumulated Water ofA condensation is forced into said float chamber, and a valve-piece to control the outlet carried by said float and havv ing anair discharge passaveway through it forming a communication between the outlet and the interior of the float, whereby the air which has passed the water seal will be discharged throuffh the float and valve-piece.

ln testimony Whereohl have hereunto subscribed my name in the presence of two (2) Witnesses.'

Amos HARRISON. Witnesses:

JOHN W. HILL,

CHARLES I. COBB.

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